Machine fob cutting



8 Sheets-Sheet 1. v;

M. D. WHIPPLE. MACHINE FOR CUTTING FILES.

No. 37.554. Patented Jan: 27, 1863- 8 Sheets--Sheet 2. A M. D. WHIPPLE. MACHINE FOR CUTTING FILES.

No. 37,554. Patented Jan. 27, 1863,

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8 Sheets-Sheet 8.

M. DJWHIPPLE. MACHINE FOR GUTTING FILES.

Patented Jan: 27, 1863,

is supported and fed 'forward as the on UNITED STATES PATENT OFFICE.

MILTON D. WHIPPLE, 0F GAMBRIDGEPORT, ASSIGNOR TO THE WHIPPLE FILE MANUFACTURING COMPANY, on BALLARD YALE, MASS.

IMPROVEMENT IN MACHINESFOR CUTTING FILES. v

Specification forming part of Letters Patent No. 37,554, dated J anuary 27, 1863.

.and State of Massachusetts, have inventedan Improved Maehinefor Cutting Files, of which 1 the following is a full, clear, and exact description, reference being had to the accompanying drawings, making part of this specification, in whieh Figure 1- is an elevation; Fig. 2, a vertical section on theline ac amf Fig. 1; Fig. 3, a planof the parts beneath the table A; Figs. 4 and 5, details to be referred to.

The machine which is the subject of my present invention is designed for cutting the several faces of a file atone operation, a cutter striking on each faced the blank, Xhich ting proceeds. a

. That others skilled in the art may understand and nse'my invention, I will proceed to describe the manner in which I have carried it out.

In the said drawings, Ais a bed or table supported-on legs a." In the center of this table is placed a head or block, B, in which is I'pivoted, at c 0', a pair of nippers, D D',whlch close upon and hold the file-blankb. This blank rests on and is fednp vertically by-a screw-shaft, G, (the movement of which.will

be presently described,-') the'uppefend of the blank being steadied and held by a cap, d, at tached to'a bloc-k,- e, which slides indovetail grooves in a standard, Erising from the table A. Sufficient friction is applied to the block 0 to hold it st'eady'abymeans of a spring, f, Fig. 4, attached to a strip,12, on-the back of the block;.but when it is required to raise the block by hand to remove the finishediile, the pressure of the spring is takenofi fromthe standard by pressing down a hand-leveiyg, which is connected by a strap, 13, to the strip 12, and the end of which bears against the front edge of the block 6..

The nippers D D, the jaws of which areof a proper form to hold the file-blank to be cut, (in this case a three-sided file,) are operated in the following manner: A lever, F,-isattached to a shaft, h, hung in hangers Z from the under side of the table A. To this shaft 7:. are attached two beveled or cam-Shaped arms, 1:, each of which presses on a roll, m, on the lower end of the nipper D or D, the outer end .of the lever being drawn down and the pressure applied by a spring, at, attached to the lever. and to a bracket, 0, projecting from one of the legs a of the stand. A. rod, 19, is pivotedto the outer endjof the lever F, and to a treadle, G, pivoted to the leg (1, by which the operator raises the outer end of the lever and relieves the nippers from the pressure of the .cams k, when the lower ends of the nippers are drawn together by springs 10, Fig. 2, and their grasp on the file is released, so that it may be removed. Alower bed or table, H, attached to the legs a of the frame, has rising from it standards r, with suitable bearings, in which rests the main or driving shaft I,which is renolvedby a .beltappliedto the pulley K.- A cog-wheel, L, on the shaft 1 gives motion through the gears 1 2 3' to shaft M, (supported in bearings attached to the frame,) which has on it a; worm-gear, s, which engages with a pinion, t, attached to a nut,R, which em:

braces the screw-shaft O, and. rests in a collar, '0, suspended by hangers w from the under side of the table A, andas the nut is revolved the shaft 0 is raisedor lowered. (Apin, 4, passes through a block, 5, attached to the under side oii-the-bed H, and enters a groove, 6, in the shalt-0,110 prevent it from turning round.) v In order to; stop the feed when the, cutting or the; file has been completed, and to disenhe Worm-gear. .g-from the pinion t when the shaftgO is tobe run down, preparatory to introducing afreshblank,'l haveadopted the following device: The box, in which one end iof-the shaft M rests is made to 'slide ina refcess in an arm, N, attached to one of the hang- "ers w, and is moved toward or from thepinion't'by a wedge-shaped block, q, (shown in Fig; 5,) whichis caused toslide inbehind the box by a rod, a, attached to the. wedge,'and to an arm, 'b,;on a short. shaft; 0, supported on one of the hangers w, and which is turned in'one direction (as indicated by arrow's.-2,- Fig. 1) by a. coiled spring, 0, to throw the worm is. cut of gear,.and' is turnedin the oppo-, siteedirectiontoj engage the gears and set the.

feed in operaticinby turning the hand=lever P, by 'wh ic-h the attendant revblves a vertical shaft, P, to which. is attached a slotted am, e. A pin in a sliding "bar, f enters the slot in-the arm e, and thebar is moved in the direction of thearrow 3, when a pin on the bar strikes a lever,. 9, attached to the shaft 0, and through the connections of arm b and rod it moves the wedge g and forces the worm-gear son the shaft M into contact with the pinion t, and the screw-shaft O is fed upward. There is also attached to the shaftO ashort horizontal arm, 2', from which hangs a flat bar, it which passes down through the bed H, and has a block, I, attached to its lower end. When the shaft 0 is vibrated and the worm s is thrown into gear, this bar h is depressed, .and a notch, 7, in it catches under a plate on the lower side of the bed H, (a spring, 8, pressing it to one side,) and the partsare held in gear until the screw-shaft (-3 has been fed up sufiiciently far to complete the cuttingof. the file, when a block, W, attached to the lower end of the shaft, 0, strikes the block Z and pushes back the bar h against the resistance of the spring 8, and releases its notch from under the bed H, when the coiled spring 0? revolves the shaft 0 in the oppositednection, (as indicated by arrow 2,) and the wedge q throws .the worms out of gear and the feed is stopped". The ends of the blocks Zand m are beveled, and the former one is made adjustable on the bar h.

As a convenient method of running down the screw-shaft 0 when the feed is completed and the feed-gears are thrown out of contact, I have attached a spool, n", to the lower part of the nut R: A cord, 9, is wound up on this spool as the feed pregresses, and is drawn off from a barrel p (supportedv on a bracket, 10, attached to one of the legs (1,) inwhich a spring is coiled, so that when the pinion t and nut Itjare set free this springwill retract the cord 9 and revolve the nut R in the opposite direction and run the shaft 0 down, ready for a fresh blank to be placed in the machine.

I will now describe the mechanism by which the several faces of the file are cut at the same time. Three vertical shafts, S S S, rest in steps on the bed H andrise through the table A. The shaft S carries a beveled gear, T, which-engages with a pinion, W, on the end of the driving-shaft I. Each of these vertical shafts carries an indented pulley or sprocketwheel, U, a chain, 1', passing around allthe wheels U. The motion given to thefirst shaft, S, is communicated to the other shafts, S S". Each of these shafts carries on its upper end above the table A a cam-wheel, V, which operates the hammer or cutter which makes the out to form the teeth of the file. (As the three are similar, I will describe but one.) Two standards or .housings, a, rising from the table A, support a shaft, b, to which is attached a 011313 0 carrying a curved arm, d and two short arms or studs, eif". The cutter X is secured to the arm d, and the arm e rests against the edge of the cam-wheel V. A spring, 9 presses on the arm f to throw down-the cutter as the arm e drops off from 7 one of the shoulders 11 of the cam-wheel V. The end of the springg is held in a short shaft, h and the pressure of the spring is.

pressure to the spring. The arm f strikes on a stop, mi, which is adjustable in height, so as to regulate the force of; the blow or the depth of the cut made bythe cutter,

The following is the operation of the machinei The operator presses his footon the treadle G, which vibrates the lever F, throws down the cams k, and permits the spring r to draw the lower ends of the nippers D Dtogether and open their jaws for the reception of the file-blank b. The pulley K and shaft I are now revolved in the-direction of the arrow, Fig. 1,-and the hand-leverv d is turned in the direction of its arrow, which, through the shaft P, arm e, sliding bar f, and arm 9 revolves the shaft 0, which vibrates the arm 6' in a direction contrary to its arrow 2, and through the rod a pushes the wedge-block q in' the direction of its arrow 5. This moves the box inwhich the end of the shaft M revolves up toward the pinion t and engages the worm-gears with the pinion, which turns [the nut R and feeds'up the screw-shaft G, 'on

top of which the blank 6 rests. At the same time the shaft I, through the gears W and T, wheels U, and chain o,'=revolves the shafts S S S, and the three cuttersX are caused to strike one on each face of the blank b, making'the necessary cuts as the blank is, fed up.

When the file has beencut and the shaft 6 has been fed up sufiiciently high, the block m on. the lower end of it strikes the block I, and disengages the rod h from the bed H, when the spring 0' revolves the shaft 0 in the opposite direction and throws the gear 8 out of contact with the pinion t, and the feed is stopped. The belt is now thrown off from the pulley K and the cutters cease to operate. A shipper may be attached to the end of the sliding bar f 2 to throw thebelt onto or off fromthe pulley K by the operation of'the machine. As the shaft (Twas being fed up the cord 9 was wound up on the spool 11". As soon as the gear 3 and pinion t are disengaged the retraction of the spring in the barrelp' revolves the nut R in the opposite direction and runs the shaft 0 down, ready for a fresh blank to be placed in the nippers and for the operation to be repeated.

The several faces of a file being cut by this machine at one operation, or while the blank is being fed up once, a great saving of time and labor of the attendant is efl'eoted.

What I claim as my invention, and desire tosecure by Letters Patent, is

The central rest or block, B, with its jaws or nippers D D, for holding the file-blank, in combination with a feed mechanism for feeding the blank, and the several cutters X, each of which cuts one face of the file during a single feed, substantially as specified.

Witnesses: MILTON D. WHIPPLE.

THos. R. Roncn, P. E. TESCHEMAOHER. 

